Threatening prose

My favorite books are those with suspense and action. I regularly OD on John Sandford, John D. MacDonald, Jonathon Kellerman, J.A. Jance and a host of other authers. Inspired, I sit down to write my own action suspense and guess what?The suspense and action fizzle and die. I know there's a real art to stringing out the suspense and choreographing the action. What exactly is it?I confess I don't